Introduction
The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.
Improvement List
Standard assembling structure (Times-of-5mm Center distance between four 3mm mounting holes)
Easily recognitive interfaces of sensors ("A" for analog and "D" for digital)
Icons to simplely illustrate sensor function
High quality connector & potentiometer
Immersion gold surface
Specification
Power supply: 5V
Interface type: Analog
High sensitivity to alcohol and small sensitivity to Benzine
Fast response and High sensitivity
Stable and long life
Simple drive circuit
Size: 36.4x26.6mm